Piroxenos relictosuna clave para la interpretación del vulcanismo en la Faja Pirítica Ibérica
- M.L. Fernández-Martín 1
- R Sáez 1
- E. Pascual 1
- 1 Departamento de Geología. Universidad de Huelva.
ISSN: 0213-683X
Argitalpen urtea: 1996
Zenbakia: 20
Orrialdeak: 568-571
Mota: Artikulua
Beste argitalpen batzuk: Geogaceta
Laburpena
Relict clinopyroxenes from strongly altered basalts sampled in the Sotiel-Torerera area (central sector of the Iberian Pyrite Belt, southwestern lberian Massif, Spain), have been analysed by EMP. lt has been found that clinopyroxene cores are Ti-rich, representing the pyroxene compositions equilibrated with basaltic magma. An alkaline magma character is consequently deduced. Finally, it is suggested that datafrom relict minerals may indicate the original magma character better than whole-rock geoshemistry, in this and other cases in which rock alteration is both intense and polyphased.